Picture Perfect RGB Rendering Using Spectral Prefiltering and Sharp Color Primaries

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Talk Overview

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1. A Brief Comparison of Color Rendering

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Spectral Rendering

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Component Rendering

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RGB (Tristimulus) Rendering

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Rendering Cost Comparison
Can get away with fewer spectral samples if scene contains only smoothly-varying source and reflectance spectra, or samples are chosen to correspond to spectral peaks.

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Strengths and Weaknesses

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Spectral Aliasing

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The Data Mixing Problem

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2. Getting the Most Out of RGB

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Status Quo Rendering

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When Does RGB Rendering Normally Fail?

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Given Its Predominance, Can We Improve RGB Rendering?

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A Few Useful Observations

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Picture Perfect RGB Rendering

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Spectral Prefiltering

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Prefiltering vs. Full Spectral Rendering

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Quick Comparison

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The von Kries Transform for Chromatic Adaptation

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Chromatic Adaptation Matrix

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3. Three Tristimulus Spaces for Color Rendering

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XYZ Rendering Process

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sRGB Rendering Process

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Sharp RGB Rendering Process

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Our Experimental Test Scene

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4. Experimental Results

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Example Comparison (sRGB)

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Results Summary

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5. Conclusions

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Future Work

Page created Sept 17 2002 5:38:36a